LionKing - Model BKF-EX200 -Tunnel Explosion-Proof Electric Positive/Negative Pressure Fan

The small space smoke exhauster BKF-EX200 Safety explosion-proof electric positive/negative pressure fan
Designed for hazardous environments to provide safe, clean breathing air when and where it’s needed, anti-static housing, lightest fan in its class, rugged double-wall construction, ultra-quiet design, air duct for quick exhaust For conversion between air and exhaust, a 4.6m or 7.6m anti-static wind can be installed.